XD-21 LM358 Gain Amplification Module Operational Amplifier Module MACH3 Interface Board CNC 5 Axis with Optocoupler for Stepper Motor Driver with male to male USB Cable Solder joints eliminate micro-motion at

Solder joints eliminate micro-motion at the contact interface that causes creep and loosening over time

the relay output activates

then connect the control signals: RS (Register Select)

Direct HAT Header Compatibility: Plugs directly onto Raspberry Pi 40-pin header with zero soldering required

adjust the current limit potentiometer to set the maximum allowable current

XD-21 LM358 Gain Amplification Module Operational Amplifier Module MACH3 Interface Board CNC 5 Axis with Optocoupler for Stepper Motor Driver with male to male USB Cable Solder joints eliminate micro-motion atXD 21 LM358 Gain Amplification Module Operational Amplifier Module